chickens in the rain

I have 4 barred leghorn hens and 1 rooster. It has been raining for 4 hours straight now and instead of them being inside out of the rain they are all roosting outside on top of the run. I tried to get them inside but they will not go. Will they be okay sitting in the rain getting wet? Sounds like a dumb question. I am not an expert at raising chickens so I am unsure. Can anyone let me know please? Thank you!.

Our chickens LOVE the rain, it's their favorite weather. I don't know where "madder than a wet hen" comes from or "Madder than a rained on rooster" because all of ours love it. If you can't get them in it's a moot point but I figure they know best. I would have said that, actually, before I had chickens, now I know they might just be too dumb to come in but I do know ours make a point of going out in the rain.

It depends on the temperature. This time of year, it's probably ok. But a few months ago I can remember reading a post here from a member who had several young chickens die when they stayed outdoors and got soaked through in a cold rain.